DC brushless motakapangidwe kake ndi koyenera, liwiro lake limakhala lokhazikika, kotero nthawi zambiri, nthawi zambiri sizikhala ndi liwiro lalikulu la regulation.Chifukwa chakuti galimotoyo imakhala ndi ntchito zambiri ndipo imatha kugwiritsidwa ntchito ndi makina ambiri, ndikofunikira kusintha liwiro lake malinga ndi zochitika zosiyanasiyana. Koma brushless dc motor control and speed regulation njira imafuna kuti aliyense aphunzire, kuti agwiritse ntchito mwachangu:
1. Poyang'anira ndondomeko yomwe coil imapatsidwa mphamvu, koyilo yotsutsana imagawidwa m'magulu ndipo panopa imapatsidwa mphamvu kuti ipange mphamvu ya maginito mbali imodzi.
2. Chiwerengero cha mitengo ya brushless dc motor ndi zitatu, kotero kuti peyala iliyonse ya "mitengo ya maginito" ikhoza kuchitidwa mwanjira inayake kuti ikwaniritse mphamvu ya maginito kuzungulira. pakati nthawi zonse amakhala ndi chizolowezi kusunga mphamvu ya maginito mbali imodzi ndipo imazungulira ndi maginito ozungulira.
H1H2H3 ndi masensa atatu a Hall omwe amayikidwa mumpata wa mpweya wa koyilo yosangalatsa, yomwe imagwiritsidwa ntchito ngati chinthu chozindikira mphamvu ya maginito.Magetsi amatha kusinthidwa molingana ndi momwe maginito akulowera, ndipo zotuluka zake ndi chizindikiro cha digito.
3. Coil ya stator imapatsidwa mphamvu motsatira ndondomeko yotsatira, ndipo mphamvu ya maginito ya rotor ndi mphamvu ya maginito ya stator iyenera kukhala ndi Angle. Kumalo ogwirira ntchito omwe adatumizidwanso ndi sensor ya Hall.
Lamulo lake ndikutumiza mawiri awiri a coil ndikuyimitsa, masiwichi awa amakwaniritsidwa kudzera pa transistor.
Kuzungulira kwa magawo atatu a BLDC kumatha kuchitika popatsa mphamvu kapena kudula ma ma transistors atatu mwanjira inayake.
4. Pamene rotor ikuzungulira, mphamvu yopangidwira ya koyilo iliyonse imachokera kumtunda kupita ku zero ndikubwereranso. Chifukwa pamene coil ipatsidwa mphamvu mosiyana, mphamvu ya electromotive reverse idzalepheretsa mphamvu yowonongeka, kotero kuti gawo la trapezoidal wave lidzatha. kuwoneka. Mphamvu zabwino ndi zoipa za gawo la trapezoidal la zero ndi zotsutsana, kotero kuti ntchito ya galimoto ya stator ikhoza kutsimikiziridwa pozindikira mphamvu yabwino ndi yoipa pambuyo pa comparator voteji.
Popeza zero point ili pakatikati pa trapezoid, kuzungulira kwa BLDC kumatha kuwongoleredwa pambuyo pa chizindikiro chowongolera cha nthawi yofananira ndikutuluka pambuyo pa kuchedwa kwa 30 °. yendetsa ndiMtengo wa BLDC.Ngati mawonekedwe a waveform ali abwino, ma curve atatu a coil voltage atha kupezeka mwa kuphatikiza mwachindunji magetsi.
5. Dziwani komwe mungayambire, limbitsani koyilo yocheperako poyamba, pangani rotor kutembenukira kumalo oyambira munthawi yochepa, ndikupatseni mphamvu molingana ndi machitidwe otsatirawa.
Kuti tipititse patsogolo kugwiritsa ntchito bwino kwa mota ya brushless dc, tiyenera kuphunzira kutengera malo osiyanasiyana ogwiritsira ntchito, kuwongolera kosiyanasiyana komanso kuwongolera liwiro, kukonza magwiridwe antchito agalimoto, kuwongolera ndi kuwongolera liwiro kungagwiritsidwe ntchito kusintha liwiro.
Nthawi yotumiza: Mar-28-2020
